/Engine/Source/Runtime/Slate/Public/Widgets/Views/STreeView.h
typedef [TMap](API\Runtime\Core\Containers\TMap)< ItemType, [FSparseItemInfo](API\Runtime\Slate\Widgets\Views\FSparseItemInfo), [FDefaultSetAllocator](API\Runtime\Core\Containers\FDefaultSetAllocator), [MapKeyFuncsSparse](API\Editor\UnrealEd\Editor\SListView\MapKeyFuncsSparse) > TSparseItemMap